Intended for healthcare professionals

Letters Availability of medical cannabis

Medical cannabis: we need a change in culture and far more government action

BMJ 2019; 365 doi: (Published 10 June 2019) Cite this as: BMJ 2019;365:l4111
  1. Michael C Smith, consultant forensic psychiatrist
  1. Stockton Hall Hospital, York YO32 9UN, UK
  1. m.smith15{at}

Nutt’s article on medical cannabis outlines several reasons behind the limited effect of the UK legal reform.1 The complexity of the cannabis plant limits our ability to integrate it into the current pharmaceutical paradigm of single molecule drugs.2

Medical cannabis has been assessed in several randomised controlled trials,3 but the resulting data cannot be combined because of the diversity of cannabis strains and different relative proportions of active ingredients. The absence of robust RCT data is a major problem as the …

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